1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vodka [1.7K]
3 years ago
11

How much work would be needed to raise the payload from the surface of the moon (i.e., x = r) to the "end of the universe"?

Physics
2 answers:
meriva3 years ago
6 0
Moon was rotation Earth or sun
it's own orbit . universe is not end
marysya [2.9K]3 years ago
3 0

Answer:

W(3R) - W(2R) = -PR² (1/(3R) - 1/(2R)) = PR/6

Explanation:

"Assume the weight move up at constant speed. With no net acceleration, the force applied is -(weight). Since the weight at height R is -P(R/x)² (minusbecause it's directed downward) the applied lifting force is P(R/x)², and the work done moving from x to x+dx is dW = P(R/x)² dx. Intetgrate this:"

W(x) = ?PR²/x² dx = -PR²/x + C

 The work done moving from x=R to x=2R is:

W(2R) - W(R) = -PR²(1/(2R) - 1/R) = PR/2

(b) The work done moving from 2R to 3R is:

W(3R) - W(2R) = -PR² (1/(3R) - 1/(2R)) = PR/6

You might be interested in
You see lightning and 30 seconds later you hear thunder. how far away is the thunderstorm? take the speed of sound to be 339 m/s
Jobisdone [24]
Let the observer be 'd' distance away from the thunderstorm and let light take 't' time to reach the observer
Since the speed of sound and light remains constant in a particular medium, we can use
      Speed = Distance/Time

For light,
   3 x 10^8 = d/t
                t = d/(3 x 10^8)   -1 

For sound,
           339 = d/(t + 30)       -2

Putting value from 1 in 2.
               d = 10^4 m(approx)
3 0
3 years ago
The SI unit for acceleration is_____<br> a m/s.<br> b m/s 2<br> c m/s2<br> d none of the above
zalisa [80]
I dont know from option
Because SI Unit of acceleration is m/s^2
7 0
2 years ago
A 14.0 gauge copper wire of diameter 1.628 mmcarries a current of 14.0 mA. Part A: What is the potential difference across a 2.1
FrozenT [24]

Answer:

for copper potential difference is 2.4871 × 10^{-4} V

for silver  potential difference is 2.1256 × 10^{-4} V

Explanation:

given data

diameter D = 1.628 mm = 0.001628 m

current = 14.0 mA = 0.0140 A

length L = 2.15 m

to find out

potential difference

solution

we consider here

resistivity of silver =  1.47 × 10^{-8} ohm-m

resistivity of copper = 1.72 × 10^{-8} ohm-m

so we apply here resistance formula that is

Resistance = ρ × L / A     ...............1

so here area A = πr² = π(0.001628 /2)² = 2.0816 ×  10^{-6} m²

for copper Resistance = ρ × L / A

Resistance = 1.72 × 10^{-8}  × 2.15 / 2.0816 ×  10^{-6}

Resistance = 1.7765 × 10^{-2}  ohm

for silver Resistance = ρ × L / A

Resistance = 1.47 × 10^{-8}  × 2.15 / 2.0816 ×  10^{-6}

Resistance = 1.5183 × 10^{-2}  ohm

so

potential difference  is calculated as

for copper potential difference  = current × resistance

potential difference  = 0.0140 ×1.7765 × 10^{-2}

potential difference  = 2.4871 × 10^{-4} V

for silver  potential difference  = current × resistance

potential difference  =  0.0140 × 1.5183 × 10^{-2}

potential difference  =  2.1256 × 10^{-4} V

7 0
2 years ago
An artificial satellite is moving in a circular orbit of radius 24,600 km. Calculate its speed if it takes 12hours to revolve ar
denis-greek [22]

Answer:

the speed of the satellite is 12,880.53 km/h

Explanation:

Given;

radius of the circular orbit, r = 24,600 km

time taken to revolve around Earth, t = 12 hours

The circumference of the satellite is calculated as;

L = 2πr

L = 2π x 24,600 km

L = 49,200π km

L = 154,566.36 km

The speed of the satellite;

v = L/t

v = 154,566.36 / 12

v = 12,880.53 km/h

Therefore, the speed of the satellite is 12,880.53 km/h

6 0
3 years ago
WHEN AN LIQUID FORM MATTER IS SOLIDIFIED AND THEN BROKEN. THE LIQUID COULD BECAME AGAIN THE SAME LIQUID THAT WAS SOLIDIFIED.¨?
scZoUnD [109]

Answer:

For example, a solid may become a liquid. This phase change is called melting. When a solid changes into a gas, it is called sublimation. When a gas changes into a liquid, it is called condensation. ... That allows the solid substance to have a definite volume and shape.

Explanation:

Mark me as brainliest

3 0
3 years ago
Other questions:
  • a 0.24 kg blob of clay is thrown at a wall with an initial velocity of 19m/s. the clay comes to a stop against the wall in 82ms,
    15·1 answer
  • Calculate the power provided by a 12 volt car battery with a rating of 350 amperes.
    14·1 answer
  • Help!! I’ll give brainliest! Match the changes in sound wave properties with their effects on an observer.
    6·1 answer
  • Un cuerpo gira con movimiento circular uniforme un ángulo total de 1080° en 20
    13·1 answer
  • Based on what you know about how light travels, explain why
    13·2 answers
  • 1. What do you think determines the type of traits you inherit?
    10·1 answer
  • 1+5-(-5 - 1) whats the answer​
    14·2 answers
  • Mains electricity is an ac supply. Explain the difference between direct and alternating potential difference.
    14·1 answer
  • A ball of mass of 0.5kg is dropped from a height of 2m.
    15·1 answer
  • The answer is not B.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!